Typewriting-machine



B. C. STICKNEY.

TYPEWRITING MACHINE.

APPLICATION FILED 0m30.191s.

Patented Nov. 1, 1921.

3 SHEETSVSHEET 1.

B. C, STICKNEY.

TYPEWRITING MACHINE.

APPLICATION FILED pcT.3o,191s.

Patented Nov. 1, 1921.

SSHEETSv-SHEET Z.

B. C. STICKNEY.

TYPEWRITNG MACHINE.

APPLICATION FILED OCT. 30, i919.

UNITED STATES PATENT OFFICE.

BURNHAM C. STICKNEY, 0F ELIZABETH, NEW JERSEY, ASSIGNOR T0 UNDERWOODTYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

p TYPEWRITING-MACHNE.

Specification of Letters Patent.

Patented N ov. 1, 1921.

Application led October 30, 1919. Serial No. 334,426.

To allwkom it may concern:

Be it known that I, BURNHAM C. STICK- NEY, a citizen of the UnitedStates, residing in Elizabeth, in the county of Union and State o f NewJersey, have invented cert-ain` new and useful Improvements inTypewriting-Machines, of 4which the following is a specification.

This invention relates to typewritingmachines, and more particularly towork-sheetfeeding and controlling mechanism for such machines.

In usin a typewriter to `write individual bills or orms on separatesheets, and to write ledger accounts or classified totals on anothersheet, it is necessary to alternate the writing on one sheet with thaton another or others. With a typewriter of the ordinary form, work ofthis nature would require insertion of thel same sheet in the machineeach time that writing is to be effected thereon, thereby incurringwaste of labor and time and liability of error.

According to the present invention, simple and efficient means have beenprovided, whereby Work of this nature may be effected by simplemechanism.`

The unitary laten may be and preferably is of considera le length, so asto accommodate a wide sheet, or two sheets of ordinary width side'byside. The platen may be actuated by finger-wheels onits axle, or by asuitable line-spacing mechanism, including a ratchet-Wheel mounted onthe axle.

In the preferred manner of carrying out the invention, the feed-rollsopposite the left-hand half of the platen and those opposite theright-hand half of the platen are mounted independently of each other.

Provision may be made of means to release the feed-rolls from eitherhalf of the platen independently of the others. To this end, afeedJ-roll-relea'se shaft may be Vposltioned `below each of the halvesof the unitary platen, so as to coperate with the springpressed armssupporting the feed-rolls, to release the feed-rolls when desired.Preferably, the feed-roll-release shafts are in alinement.

To enable the insertion or withdrawal of a single wide sheet, or of twonarrow sheets` simultaneously, provision may be made of a finger-pieceand means controlled thereby, whereby all of the feed-rolls may berenarrow sheets, side by side,

leased or permitted to return to their effective positionssimultaneously.

Finger-pieces, individual to the feed-rollrelease shafts underlying theopposite portions of the platen, may be provided, as well as suitablemeans through which the fingerieces may actuate the correspondingshafts.

his feature is of particular value in placing on the platen, in that thesets of rolls may be released by the finger-pieces and that each set ofrolls may be restored to normal position as soon as the correspondingwork-sheet has been inserted. This feature may also beof value inconnection with the adjustment of a sheet, already inserted, withoutaffecting the adjustment of the other.

In case two work-sheets have been inserted so as to lie side by side onthe platen, it may be desirable to feed both of said worksheetssimultaneously, or either one independently of the other. For thispurpose, provision may be made of a finger-piece movable to threepositions, and means whereby said finger-piece, in one position, will beineffective 'to release any of said feedrolls, but, when moved to eitherof the other positions, will effect release of the roll or rollsassociated with the corresponding end of the platen. As hereindisclosed, movement of the finger-piece' in one direction will effectrocking of the feed-roll-release shaft under one half of the platen, andmovement of the finger-piece in the opposite direction will effectrocking of the other feed-roll-release shaft. Obviously, when thework-sheet opposite one end of the platen is released, actuation of theplaten will be ineffective thereon, but may effect movement of the otherwork-sheet.

In order to prevent accidental displacement of a released work-sheetwhile the other is being fedby the platen, provision may be made ofvnormally ineffective gripping or holding means, whereby movement of thethree-position finger-piece to release one of said work-sheets willrender the corresponding gripping or holding means effective to hold thereleased work-sheet against accidental displacement.

Suitable provisions for lost motion may also be made, so that, with theparts in their normal positions,v actuation of any of said fngerpiecesmay beeffected'without actuation of any of the others, thus avoidingunnecessary movement of parts.

Due to the use of a single or unitary platen, the, mechanism vis ,welladapted to feed wide sheets and fe'el simultaneously sheets placed sideby side on said platen. This feature of construction also enables theuse of a single line-spacing mechanism, instead of two line-spacemechanisms, or of more complicated mechanism.

L )ther features and advantages will hereinafter appear.

` In the accompanying drawings,

Figure 1 is a front elevation of a platenframe of an Underwoodfront-strike typewritin machine, showing my invention applied t ereto.

' Fig. 2 is a plan view of the platen-frame in inverted position.

Fig. 3 is a sectional side elevation of the vstructure shown in Fig. 1,the parts being in their normal positions.

Fig. 4 is a View similar to Fig. .3, but

. showing'the left-hand feed-rolls released and the correspondinggripping device effective. Fig. 5 is a view similar to Fig. 3, showingthe right-hand feed-rolls released and the corresponding gripping deviceeffective.

Fig. 6 is a view similar to Fig. 3, showing the right-hand feed-rollsreleased by a fin er-piece individual thereto.

platen 1 of the usual type, preferably a wide platen, is rotatablymounted by means of an axle 2 in end frames I3 andi 4 of a;platen-frame, and may be rotated by means of iingerwvheels and 6,respectively, or by line-space mechanism including a ratchetwheel 7`mounted on said axle 2.

The work is held against the platen by means offrent feed-rolls 8 andrear feedrolls 9, which, inasmuch as the mechanism is intended for usein feeding two sheets side by side on the platen, are divided into twogroups, one coperating with the lefthand portion, preferably half of theplaten, and the other with the right-hand portion. The front and rearfeed-rolls at either end of the platen are mounted on shafts 10 and 11,respectively, the shafts being carried. by levers 12, which are pressedupwardly by springs 13 secured to collars 14, fixed on shaft 15, onwhich said levers 12 are pivoted.

In order to release the right-hand and left-hand sets of feed-rollsindependently, feed-rolllrelease shafts 16 are provided for each half ofthe platen, and are preferably in alinement. These release shafts may beformed in the usual manner by cutting away ortions on opposite sidesthereof to form epressions 17 having flat bottoms against which thelower ends of the levers 12 rest when the parts are in normal position,as

. shown in Fig. 3e ,It will be noted that these depressions, which mayor may not overlap, are herein disclosed as not` overlapping (Figs. 1and 2), although the sections of shafts 16 are so taken that, in otherfigures (Fig. 5, for example), the appearance of overlapping is given.

In case two work-sheets are to be placed side by side on the laten, thefeed-'rolls opposite either end o the platen may be released, a sheetIinserted, and the feed-rolls returned to their normal positions. 'I'hesecond sheet may then be inserted in the same manner. In case theright-hand sheet is to be inserted, a finger-piece 18 is swung about itspivot from a position in contact with stop-pin 19 to a position incontact with stop-pinl 20. In this movement, a cam 21, connected to saidfinger-piece 18, is swung from the position shown in Fig. 2- to theposition shown in Fig. 6. The cam 21 inA this movement acts against ahooked end 22 of link 23 to lift said link 23 and actuate an arm 24connected therewith to swm the right-hand-release shaft 16 from the ig.3 position to the Fi 5 position, thereby releasing the feed-ro 1s of theright-hand set, as shown-in Fig. 6. It will be noted (Fig.

sufficient to forcethe lower ends of the feedroll-supporting levers 12from the flat hottoms of the depressions to the outer surface of theshaft, and that the springs 13 tend to return the rock-shaft to itsnormal position. Such return movement is prevented. howv9() 6) that theturning of the shaft 16 'is not ever, by the cam 21 which has assumedsuch a position that the pressure through link 23 1s exerted, directlyagainst its;v pivot. In other words, the cam and link are substantiallyon a dead center, and the link is locked in its raised position. A pin25, engaging in.

a slot 26 near the upper end of link 23,serves to hold the link inposition to be actuated by said cam 2 1.

To insert a work-sheet for use on the left" hand art ofthe platen, afinger-piece 2i' at the le t of the platen-frame is depressed, and acts,through parts similar to those actuated by fin er-piece 18, to rock theleft-hand release siaft 16 and thereby release the feedrolls of theleft-hand set. It will be notedl that the finger-piece. 27, which ismounted inside the left-hand frame 3, is bentr forward midway of itslength. The reason for this bending will be brought out hereinafter.

The release shafts 16, which are mounted at their outer ends in brackets28 and at their inner ends ina common bracket 29, are provided neartheir inner ends with arms 30, having laterally-projecting pins 31,which constitute parts of the device for releasing both sets o rollssimultaneously. When this .result is desired, a finger-piece' 32A ismoved from its Fig. 3 position, determined by a stop-pin 33, to aposition determined by a stop-pm 34, and this motion is transmitted.

by means of a cam 35 in contact with the hooked upper end 36 of a link37, to ysaid link, and, by means of an arm 38, fixed on shaft 39, tosaid shaft.

Mounted on said shaft 39 are two arms 40, which may be mounted on asleeve fixed to the shaft, said arms, when swun downwardly, en agingpins 31 and there y rocking both s afts '16 and releasing all of thefeed-rolls This mechanism, which enables the releaseof all of thefeed-rolls by a single finger-piece, is of particular value whenever awide sheet is to be inserted.4 I-t willv be seen thatwhen finger-piece32 is in its actuated position, the end of cam 35 will engage the hookedend 36 of link 37 in suchva manner as to lock link 37 in raisedposition.

When it is desired to advance the ri hthand work-sheet without advancingthe gifthand sheet, a finger-piece 41 isswung rearwardly to the Fig. 5position from its normal position (Fig. 3), in which itis held by a pin42, carried bya spring 43, mounted on the horizontal arm of finger-piece41, engaging the middle one of three depressions 442 provided for thispurpose. It will be evldent that when finger-piece 41 reaches itsrearward position, pin 42 will snap into the lower depression 44 tomaintain the fingerpiece 41 in this position. This actuation offinger-piece 41 will also serve to depress link u 45, to swing an arm 46and thereby rock a shaft 47, 4to swing an arm 48, to which is pivoted alink 49, having an elongated slot, into kwhich projects a pin 50,carried by an arm 51 on the right-hand release shaft 16.

Said pin 50 is normally at the right-hand end of the elongated slot, asseen in Fig. 3, so that rearward movement of finger-piece 41, asdescribed,will rock shaft 16 in counterclockwise direction and throw offor release the right-hand set of feed-rolls, as shown in Fig. 5.

When finger-piece 41 is swung to its forward position (Fig. 4), shaft 47will be rocked in clockwise direction, and finger 52, at the left-handend of shaft 47 lwill press downward on a pin 53, carried by any arm 54on the left-hand release shaft, and actuate the same to release thecorresponding feedrolls. Atthe same time, link 49 will be moved idlywith reference to pin 50, andthe right-hand release shaft will remain inits normal position. It will be noted, in this connection, that whenshaft 47 is turned in` i c'ounterclockwise direction, finger 52 isrelease shaft 16 is moved away from pin 53,.and the left-'hand permittedto remain in its normal position. H

Provision Ais 'also made ofi-means controlled by finger-piece 41 forgripping the work-sheet released by the operation' of said finger-piecein one direction or the other.. For this purpose, abar or plate 55,forming a clamp member, is` placed adjacent the platen, so thatwork-sheetsfmay pass thereover in leaving the, platen, andv is securedat ends to the end plates of the platenframe in any suitable manner.

Provision is also made of nested bails56 completely )across theplaten-frame, 'it is necessary to bend finger-piece 27 4forwardlytoavoid interferencey with the bails.l

The outer lbail 56 is.- urged to :ineffective gripping position by meansof a spring 60, at the right of the machine, engaging a pin 61, carriedby an arm 62,"which is or may be -part of the bail. At the left of themachine,

a spring 63 engages a pin 64 on an arm 65 of bail 57, and urges the sameto effective position.

Control of bails 56 and 57 by finger-piece 41 is effected by means of apinl 66, which overlies and cooperates with the upper edges of cam-arms67 and 68 at the Iright-hand ends of bails 56 and 57, respectively.Camarm 67 is provided with a low portion 69 near its end, so that'it mayrise under action of spring 60, during movement of fingerpiece 41, toits rearward position (Fig. 5), and with acurved highmiddle portion 70,so that substantially no movement of arm 67 and bail 56 will' occurduring movement of the finger-piece from its middle (Fig. 3) to itsforward position (Fig. 4), orvice versa.

Cam-arm 68 is provi-ded with a high end portion 71 and a low middleportion 72, so that movement of finger-piece41 from its middle position(Fig. 3) to its rearward position (Fig. 5), and viceversa. will havesubstantially no effect on the position of the inner bailv 57,butforward .movement of finger-piece 4 1 from its Fig-,3 .position toits Fig. 4 position will effect release of the inner bail 57, which willbe moved to effective position by means of the spring 63.

It will bes-een that when both bails 56 and 57 are positioned as shownin Fig. 3, the high or elevated portions and 71 of camarms 67 and '68,respectively, are substantially concentric with ther pivot offingerpiece 41.

When thevarious finger-pieces are in the positions shown in Fig. 3,rotation of the platen willefect simultaneous feeding ofl twowork-sheets carried thereby. If, however, finger-piece 41 is moved tothe rear (Fig. 5), the right-hand feed-rolls will be released and thespring-fingers '58 of the outer bail 56 will press the right-handworksheet against the clamp bar 55, to prevent it being moved by theplaten or otherwise displaced. lMovement of finger-piece 41 to itsforward position (Fig. 4f) will releasethe left-hand work-sheet andcause the same to be held, by the spring-fingers 58 of the inner bail57, against movement by the platen. This mechanism, therefore, providesmeans whereby either one of Vthe work-sheets may be fed by the platenand the other held against movement.

Variations may be resorted to Within the scope of the invention, andportions of the im rovements may be used without others. g aving thusdescribed my invention, I claim:

1. In a typewriting machine, in combination, a .revoluble laten, twofeed-rolls cooperating therewith, a finger-piece, and means wherebymovement of said fingerpiece from its central position to either one ofits limiting positions will effect the withdrawal of one or the other ofsaid feed-rolls from the platen, in accordance with the direction ofmovement of said finger-piece.

2. In a typewriting machine, in combination, a revoluble platen, twofeed-rolls coperating therewith, a finger-piece, means whereby movementof said finger-piece from its central position to either one of itslimiting positions will effect Vthe withdrawal of one or the other ofsaid feed-rolls from the platen, in accordance with the direction ofmovement of said finger-piece, and means for withdrawing said feed-rollssimultaneously,

3. In a typewriting machine, in combination, a revoluble platen, twofeed-rolls cooperating'therewith, a finger-piece, means whereby movementof said finger-piece from its central position to either one of itslimiting positions will effect the withdrawal of one or the other ofsaid feed-rolls from the platen, a second finger-piece, and meanswhereby actuation of said second fingerpiece will effectconcomitantwithdrawal of both of said feed-rolls.

4. In a typewriting machine, in combination, a revoluble platen, twofeed-rolls cooperating with different parts of said platenlongitudinally thereof, so that each may cooperate with one of twosheets placed side by side on said platen, a finger-piece, meanscontrolled by tively releasing said rolls, a normally ineffectivegripping device adjacent each of saidv feed-rolls adapted, wheneffective, to prevent movement of the gripped portions of said sheet,and means for rendering said gripping devices effective.

' tion, a revoluble 5. In a typewriting machine, in combinalaten, twofeed-rolls cooperatin with di erent parts of said platen 'longitudinallythereof, so that each may cosaid finger-piece for selec-' operate withone of two sheets placed side by side on said platen, a finger-piece,means sheet, and means whereby movement of said.

finger-piece to release either of said feedrolls will render effectivethe gripping device adjacent the roll released.

` 6. In a typewriting machine, in combina-v v tion, a revoluble laten,two feed-rolls cooperating with di erent parts of said platenlongitudinally thereof, so that each may cooperate with one of twosheets'placedside by side on said platen, a finger-piece, meanscontrolled by said'finger-piece for selectively releasing said rolls, anormally ineffective gripping device adjacent each of said feedrollsadapted, when effective, to prevent movement of the gripped portions ofsaid sheet, means for rendering said gripping devices effective,finger-pieces individual vto said feed-rolls, and means wherebyactuation of each of said individual fin er-pieces willl effect releaseof the correspon ing feedrol 7. In a typewriting machine, incombination, a revoluble platen, two feed-rolls cooperatin withdifferent parts of said platen longitudlnally thereof, a. releasingdevice including a finger-piece for each of said feedrolls, a work-sheetgripping device adjacent' each of said rolls, a. third finger-piece,'and means controlled by said third finger-piece for selectivelyrendering said gripping devices effective. i

8. In a typewriting machine, in combination, a unitary revoluble platen,a set of feed-rolls yieldingly pressed aga-inst the right-hand endportion of said platen, a second set yieldingly pressed againstthe'lefthand end portion of saidl platen, means iiicluding afinger-piece to release said firstmentioned set, means including asecond finger-piece to release the second set, means including a thirdfinger-piece to release either the one or the. other set of feed-rollsin accordance with the direction in which said third finger-piece ismoved, and means including a fourth fingeriece for withdrawing both setsof fee -rolls simultaneously.

9. In a typewriting machine, in combination, a revoluble laten adapted'to receive two work-sheets side by side, a set of feedrolls to coperatewith each of said sheets, means to release either set of said feed-rollsat will, sheet-clamping means, and means whereby actuation of saidreleasing means to release one set of feed-rolls will actuate theclamping means associated with that set to clamp the sheet released,against movement when the platen is advanced.

I 'p Leonesa 10. In a typewriting machine, in combination, a revo ubleplaten, a clamp' member adjacent the surface of said platen and exltending longitudinally thereof, two co-axial bails extendinglongitudinally of the and clampin fingers on said bails a apted toibopresse against said member in accordance with the bail actuated.

glaten 11. In a `typewriting machine, in combination, avunitaryrevoluble platen, feed-rolls arranged longitudinally thereof, meansincluding pivoted arms for supporting said feed-rolls in co rativerelation with the platen, two cam' afts longitudinally of the platenconstructed and arranged so that rocking of either of said shafts willactuate the arms corresponding to certain of said feed-rolls to releasethe same, a manually movable member, and means effective when saidmember is moved 'in one direction' to .l rock only one of said camshafts and effective whensaid member is moved in the opposite directionto rock only the other cam shaft.

12. In a typewriting machine, in combinal tion, a platen, two sets offeed-rolls arranged to engage diil'erent sections longitudinallythereof, means to release each set of feedrolls -including a camshaftfor each of said sets, said cam shafts being alined with each other, afinger-piece, and means whereby the feed-rolls opposite either sectionmay be released in accordance with the direction in which saidVfinger-piece is moved.

13. In -a typewriting machine, in combilation, a'revoluble platen, a.clamp member adjacent the surface of said platen and extendinglongitudinally thereof, two co-axial bails extending longitudinally ofthe platen, a clamping finger on each of said bails to co erate withsaid member, means ur ing eac of said bails to press the correspon ingclamping finger against said member, and controlling means for saidbails, comprising a linger-piece and a cam member on each of said bailsco-acting with said finger-piece,

said cam members being so formed that both.

of said bails will be in ineffective position, or either' one ineifective and the other in ineiieetive position, dependent upon theposition of said linger-piece.

14. In a t pewriting machine, in combinaliible platen, feed-rollsarranged i p pivotedl arms, for supporting said feedro ls in coperativerelation two cam shafts'in alinement longitu inally of said platenconstructed and arranged so that rocking of either of said shafts willactuate the arms corresponding to certain of said rolls to release thesame, an arm mounted on each of said cam shaftsa rockable member, andmeans whereby movement in either direction of said rockable member fromits normal position will actuate one of with said laten,

said arms and' the corresponding shaft without actuating the other withthe direction able member.

l5. In a typewriting machine, in combination, a revoluble platen,feed-rolls arranged longitudinally thereof, means including pivotedarms, for supporting saidvfeed-rolls in coperative relation with saidplaten, two cam shafts' in alinement` longitudinally of said platenconstructed and arranged so that rocking of either of said shafts willactuate the arms corresponding to certain of said rolls to release thesame, a rockable member, and means ei'ective when said member is rockedin one-direction to rock only one of said cam shafts, and effective whensaid member is rocked in the opposite direction to rock the other camshaft 1n the same direction as the first cam shaft.

3. In a typewriting machine, in combination, a revoluble platen, two set0f feedrolls yieldingly pressed against said platen, a cam shaft forcontrolling each set ofv said feed-rolls, means whereby actuation ofeachl of said cam shafts will effect release of the correspondingfeed-rolls, a y finger-piece, and means controlled by said finger-piecewhereby movement ofy said finger-piece in one direction will rock one ofsaid' shafts in one direction andrelease the corres nding set of rolls,and movement of said arm m accordance ofv movement of said rock- ,i

plece in the opposite direction will rock the,

other shaft and of rolls.

1:7. In a typewritingmachine, in combiplaten, a clamp member release thecorresponding set said bails will be held in ineii'ective positionV whensaid lfinger-piece is in its normal position, and that movement Aof thefinger-piece to a second position will render one of said bailseffective, and that movement of the finger-piece to a third positionwill render the second bail effective and the first bail ineii'ective.

18. In a typewriting machine, in combination, a unitary platen,feed-rolls arranged lin two sets, so that each set may coperate with oneof two work-sheets, placed side by side, on said platen, to enablesimultaneous feedplaten and extendlng longiv ing of said work-sheets,and means for re- A leasing either set of feed-rolls and holding thecorresponding work-sheet against movement whereby either work-sheet maybe fed with the platen independently of the other.

$19.. In a typewriting machine, in combination, 'a unitary platen, meansfor maintaining two work-sheets, placed side by'v side, on said platenin coperatiye relation with said platen, to be fed thereby, and meansfor releasing either of said work-sheets from said maintaining means andholding the released sheet to 'prevent movement thereof when the platenis rotated.

20; In a typewriting machine, in combination, al unitary revolubleplaten, means for maintaining a pluralityof sheets, placed side by side,in coperative relation with said platen, and vmeans for selectivelyreleasing said sheets from said maintaining means and `holding saidselected sheets against movement withrthe platen when the latter isrotated.

21. In a typewriting machine, in combination, a unitary platen, meansfor maintaining a plurality of work-sheets, placed side by side, Aincooperative relation with said platen, work-sheet gripping devices ad-'jacent said platen, means or selectively remi` leasing saidwork-sheets'from said maintaining means, and means whereby operation ofsaid releasing means, to release a worksheet, will render one of saidripping devices ei'ective on the released s eet.

22. In a typewriting machine, in combination, a revoluble platen, aplurality of sets of feed-rolls urged against different portions of saidplaten longitudinally thereof to support a plurality of work-sheets sidebyv side on saidplaten, a work-sheet gripping device opposite each ofsaid sets, a fingerpiece, means actuated by said finger-piece forselectively releasing said sets of feedrolls and concomitantly renderingthe corresponding gripping devices effective, finger-pieces individualto said sets of feedrolls, means actuated by said individual{inger-pieces for releasing the corresponding sets, an additionalfinger-piece, and means actuated by said additional finger-piece forreleasing all of said sets. simultaneously. i

23, I n a typewriting machine, in combination, a revoluble platen, twosetsv of feedro`l1s' yieldingly pressed against different portions ofsaid platen longitudinally thereof, gripping devices mounted adjacentsaid platen, a finger-piece, means controlled by said finger-piece whenmoved to one position to release one set of rolls and render thecorresponding gripping device efective, and when moved to anotherposition to release the other set of feed-rolls and render thecorresponding gripping device effective, finger- -pieces individual tosaid sets of feed-rolls, and means whereby actuation of either of saidindividual fing'erieces will effect release of the correspon ing set offeed-rolls.

24. In a typewriting machine, in combination, a revoluble platen, afront set and 65 a rear set of feed-rolls, means to support said sets offeed-rolls, comprising a pair of pivoted levers for each of said sets,and means to release Vsaid rolls, comprising a feed-roll-release shaft,an arm at one end of said shaft, a link pivoted to said arm, and a camfor actuating said link, the contact between the link and the cam beingcarried to a dead-center position with reference to said cam, so thatthe latter will lock the link in operated position.

25. In a typewriting machine, in combination, a revoluble platen, a setof feedrolls yieldingly supported against each half of the platen tomaintain a work-sheet thereagainst, a gripping device adjacent eachhalf'of the platen to receive a worksheet advanced therefrom, afinger-piece, means operable by said finger-piece' to release one or theother of said feed-roll sets in accordance with the directionof'movement of said finger-piece, and means operated by saidfinger-piece for controllingv said gripping devices, comprising av pinon said finger-piece, a cam-arm connected to each of said grippingdevices,-and means urging each of said cam-arms in a'direction to renderthe corresponding gripping device efective, said cam-arms being providedwith elevations and depressions to co`- operate with said pin indetermining the effectiveness of said gripping devices for differentpositions of the finger-piece.

26. In a typewriting machine, in combination, a revoluble platen, a setof Vfeed-rolls to coperate with each end of the platen, 100 and meansfor releasing each set of feedrollsindependently of the other, includinga feed-roll-release shaft adjacent each end of the platen, an arm oneach shaft, an opera'ting shaft parallel to said release 105 shafts, afinger onv said operating shaft to engage the arm on one of saidrelease' shafts, an arm on said operating shaft, and a link pivoted tosaid last-mentioned arm and having av pin-and-slot connection with the110 arm on the other of said release shafts, whereby movement of saidoperating shaft in one ldirection will turn one of said release Shaftsin a certain direction, and movement of said operating shaft in the 115opposite direction will cause a movement of the other release shaft inthe same direction as the frst was moved by rotation of the operatingshaft in the opposite direction.

2.7. In a typewriting machine,y in combi- 120 nation, a revolubleplaten, a bar positioned adgacent said platen to receive work fedtherefrom, a bail pivoted -to swing about an axls parallel'to that ofthe platen, springfingers on sald bail to engage a work-sheet 12b andpress the same against said bar, and means yieldlngly urging said bailto a position to` cause said fingers to coperate with said bar.

28. In a typewriting machine, in combi- 130 nation, a unitarycylindrical platen adapted to receive two work-sheets, side by sldethereon, means, associated with said platen,

to enable said work-sheets to be fed thereby, means for selectivelydetermining,r Whether one or both of said sheets is to be. fed by saidplaten, and means to prevent accidental movement of the sheet which isnot to be fed.

29. In a typewriting machine, in combination, a unitary cylindricalplaten adapted to receive two Work-sheets, side by side thereon, means,associated with said platen, to enable said work-Sheets to be fedthereby, a finger-piece, and means whereby the feeding of one or both ofsaid sheets by the platen may be selectively determined by saidlinger-piece.

30. In a tvnewriting' machine, in combination, a unitary revolubleplaten,l a set of feed-rolls yieldingly pressed against the right-handend portion of said platen, a second set of feed-rolls yieldinglypressed against the left-hand end port1on of said platen, meansincluding a finger-piece to release said right-hand set of feed-rolls,means including a second finger-piece to release said left-hand set offeed-rolls, and means including a third finger-piece to release eitherthe one or the other set of feed-rolls in accordance With the directionin which said third finger-piece is moved.

BURNHAM C. STICKNEY.

Witnesses:

EDITH B. LIBBEY, JENNIE P. THORNE.

